I voted option 2 for you based upon the assumption you are using only mutual funds/ETFs, etc to invest in.

The 15% cash may be kind of high as a quick cash reserve. A 10% level, making a 50/40/10 might be more reasonable.

We retired at 55 and do not keep much cash/money market on hand, less than 1%. I can do that because I am able do an immediate funds transfer between my taxable mutual fund investment accounts and our checking/savings accounts. I do not incur any fees for the sale or transfer. I can also setup transfers in advance to occur days or weeks in later.

I do it this way because I am willing to accept some down-side short-term risk on these funds.

In the end, you need to do what is comfortable for you and allows you and your wife to sleep at night.